Caption: Hurricane Floyd. Combined visible and infrared satellite image of Hurricane Floyd in the Atlantic Ocean off the coast of Florida, USA (upper left). North is at top. The hurricane is the swirl of white clouds around the central hole (the eye). Land, such as Cuba (bottom left), is green and water is black. The eye contains calmer cloud-free air at very low pressure. Around it winds reached over 140 miles per hour. After devastating the Bahamas, Hurricane Floyd hit Florida on September 16, going on to cause 40 deaths. Hurricanes are caused by large-scale evaporation and convection in warm tropical seas. Image taken on 13 September 1999 by the American NOAA-14 satellite.